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Developing device and image forming device using the same

一种显影装置、图像的技术，应用在应用电荷图形的电记录工艺、应用电荷图形的电记录工艺的设备、电记录术等方向，能够解决图像密度不均匀、背景模糊、粘着等问题，达到减轻流动性降低、输送性能兼容、增大应力的效果

Inactive Publication Date: 2010-08-04
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a problem with this structure is that if the rotational speed of the auger is increased in order to increase the conveying speed of the developer, the developer may be affected by the frictional heat generated between the developer container and the inner wall of the developer container encapsulating the auger screw. Instead, it clumps and sticks to the inner wall of the developer container, disturbing the flow of the developer
Thus, there is a problem that the conveyance (stirring) performance of the developer is lowered, thereby causing background blur and image density unevenness due to the inability of the toner to obtain the necessary electrostatic charge

Method used

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  • Developing device and image forming device using the same
  • Developing device and image forming device using the same
  • Developing device and image forming device using the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0038] Specific embodiments for carrying out the present invention will now be described with reference to the accompanying drawings.

[0039] figure 1 An exemplary embodiment of the present invention is shown, and is an explanatory diagram showing the overall configuration of an image forming apparatus including the developing device according to the first embodiment of the present invention.

[0040] The image forming apparatus 100 of the present embodiment forms an image using toner based on electrophotography, including: figure 1 As shown, photosensitive drums 3a, 3b, 3c, and 3d for forming electrostatic latent images on their surfaces (in general description, may also be referred to as "photosensitive drums 3"); Chargers (charging devices) 5a, 5b, 5c, and 5d (in general description, may also be referred to as "charger 5"); for forming an electrostatic latent image on the surface of the photosensitive drum 3 exposure unit (exposure device ) 1; developing devices 2a, 2b, ...

no. 2 example

[0140] Next, a developing device 202 according to a second embodiment of the present invention will be described with reference to the drawings. Figure 8 is a sectional view showing the configuration of the developing device 202 .

[0141] Since the first conveying blade 312a of the first conveying member 312 corresponding to the first conveying member 112 in the developing device 2 of the first embodiment described above has a multi-helical structure constituted by a plurality of helical blades, the developing device 202 and the first The developing device 2 in the embodiment has the same configuration, and therefore, the same reference numerals are given to the same components as those in the developing device 2 , and descriptions thereof are omitted.

[0142] Such as Figure 8 and Figure 4 As shown, except for the developing roller 114, the developing tank 111, the developing tank cover 115, the toner supply port 115a, the doctor blade 116, the second conveying member 1...

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Abstract

The present invention relates to a developing device and an image forming device using the same. In a developing device including a developing vessel for storing a developer, a first conveying passage, a second conveying passage, a first conveying member, a second conveying member and a developing roller, the first conveying member has a first rotary shaft and a first conveying blade formed on the periphery of the first rotary shaft, the first conveying blade has a first inner helical blade formed on the periphery of the first rotary shaft and a first outer helical blade arranged along the axis of the first rotary shaft and radially outside the outer periphery of the first inner helical blade, and the helical pitch of the first outer helical blade is specified to be shorter than the helical pitch of the first inner helical blade.

Description

technical field [0001] The present invention relates to a developing device and an image forming device using the developing device, in particular to a developing device using a two-component developer containing toner and a magnetic carrier and an image forming device using the developing device device, the above-described developing device is used in an image forming apparatus for forming an image using toner based on electrophotography, such as an electrophotographic copier, a laser printer, a facsimile machine, and the like. Background technique [0002] In general, image forming apparatuses based on electrophotography, such as copiers, printers, facsimile machines, etc., are known. An image forming apparatus using electrophotographic copying is configured to develop an electrostatic latent image by forming an electrostatic latent image on the surface of a photosensitive drum (toned image carrier), supplying toner from a developing device to the photosensitive drum, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/00
CPCG03G2215/0833G03G15/0834G03G2215/0822G03G2215/0838G03G15/0868G03G15/0875G03G15/0879G03G15/0893
Inventor 见原幸一石黑康之
Owner SHARP KK
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